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- ##
- ## SSL settings
- ##
- # SSL/TLS support: yes, no, required. <doc/wiki/SSL.txt>
- ssl = yes
- # PEM encoded X.509 SSL/TLS certificate and private key. They're opened before
- # dropping root privileges, so keep the key file unreadable by anyone but
- # root. Included doc/mkcert.sh can be used to easily generate self-signed
- # certificate, just make sure to update the domains in dovecot-openssl.cnf
- ssl_cert = </etc/ssl/certs/dovecot.pem
- ssl_key = </etc/ssl/private/dovecot.pem
- # If key file is password protected, give the password here. Alternatively
- # give it when starting dovecot with -p parameter. Since this file is often
- # world-readable, you may want to place this setting instead to a different
- # root owned 0600 file by using ssl_key_password = <path.
- #ssl_key_password =
- # PEM encoded trusted certificate authority. Set this only if you intend to use
- # ssl_verify_client_cert=yes. The file should contain the CA certificate(s)
- # followed by the matching CRL(s). (e.g. ssl_ca = </etc/ssl/certs/ca.pem)
- #ssl_ca =
- # Require that CRL check succeeds for client certificates.
- #ssl_require_crl = yes
- # Directory and/or file for trusted SSL CA certificates. These are used only
- # when Dovecot needs to act as an SSL client (e.g. imapc backend or
- # submission service). The directory is usually /etc/ssl/certs in
- # Debian-based systems and the file is /etc/pki/tls/cert.pem in
- # RedHat-based systems.
- #ssl_client_ca_dir =
- #ssl_client_ca_file =
- # Request client to send a certificate. If you also want to require it, set
- # auth_ssl_require_client_cert=yes in auth section.
- #ssl_verify_client_cert = no
- # Which field from certificate to use for username. commonName and
- # x500UniqueIdentifier are the usual choices. You'll also need to set
- # auth_ssl_username_from_cert=yes.
- #ssl_cert_username_field = commonName
- # SSL DH parameters
- # Generate new params with `openssl dhparam -out /etc/dovecot/dh.pem 4096`
- # Or migrate from old ssl-parameters.dat file with the command dovecot
- # gives on startup when ssl_dh is unset.
- ssl_dh = </usr/local/dovecot/etc/dh.pem
- # Minimum SSL protocol version to use. Potentially recognized values are SSLv3,
- # TLSv1, TLSv1.1, and TLSv1.2, depending on the OpenSSL version used.
- ssl_min_protocol = TLSv1
- # SSL ciphers to use, the default is:
- #ssl_cipher_list = ALL:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH
- # To disable non-EC DH, use:
- #ssl_cipher_list = ALL:!DH:!kRSA:!SRP:!kDHd:!DSS:!aNULL:!eNULL:!EXPORT:!DES:!3DES:!MD5:!PSK:!RC4:!ADH:!LOW@STRENGTH
- # Colon separated list of elliptic curves to use. Empty value (the default)
- # means use the defaults from the SSL library. P-521:P-384:P-256 would be an
- # example of a valid value.
- #ssl_curve_list =
- # Prefer the server's order of ciphers over client's.
- #ssl_prefer_server_ciphers = no
- # SSL crypto device to use, for valid values run "openssl engine"
- #ssl_crypto_device =
- # SSL extra options. Currently supported options are:
- # compression - Enable compression.
- # no_ticket - Disable SSL session tickets.
- #ssl_options =
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